dl_data_ack_ind.7

7号信令功能代码,为开源代码

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.so lis.macros
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.\"
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.TH DL_DATA_ACK_IND 7 "2004/01/12 23:45:11" "LiS-2_16_18-8" "Linux STREAMS"
.SH NAME
.B DL_DATA_ACK_IND (dl_data_ack_ind_t)
\- conveys one DLSDU from the DLS Provider to the DLS User.
.SH DESCRIPTION
.B DL_DATA_ACK_IND
conveys one DLSDU from the DLS Provider to the DLS User.
This primitive indicates the arrival of a non-null, non-duplicate DLSDU
from a peer Data Link User entity.
.SH SYNOPSIS
Consists of one
.B M_PROTO
message block containing the structure shown
below, followed by one or more
.B M_DATA
blocks containing one or more bytes of data.  The amount of user data that may
be transferred in a single DLSDU is limited.  This limit is conveyed by the
parameter
.I dl_max_sdu
in the
.BR DL_INFO_ACK (7)
primitive.
.sp
.nf
\fC\s-1\
typedef struct {
    t_uscalar_t  dl_primitive;
    t_uscalar_t  dl_dest_addr_length;
    t_uscalar_t  dl_dest_addr_offset;
    t_uscalar_t  dl_src_addr_length;
    t_uscalar_t  dl_src_addr_offset;
    t_uscalar_t  dl_priority;
    t_uscalar_t  dl_service_class;
} dl_data_ack_ind_t;
\fR\s+1
.fi
.SH PARAMETERS
.TP
.I dl_primitive
conveys
.BR DL_DATA_ACK_IND .
.TP
.I dl_dest_addr_length
conveys the length of the DLSAP address of the destination DLS User.  If the
destination user is implemented using DLPI, this address is the full DLSAP
.TP
.I dl_dest_addr_offset
conveys the offset from the beginning of the
.B M_PROTO
message block where the destination DLSAP address begins.
.TP
.I dl_src_addr_length
conveys the length of the DLSAP address of the source DLS User.
.TP
.I dl_src_addr_offset
conveys the offset from the beginning of the
.B M_PROTO
message block where the source DLSAP address begins.  address returned on the
.BR DL_BIND_ACK (7).
.TP
.I dl_priority
priority provided for the data unit transmission.
.TP
.I dl_service_class
specifies whether or not an acknowledge capability in the medium access
control sublayer is to be used for the data unit transmission.
.RS
.TP
.B DL_RQST_RSP
use acknowledgement service in the medium access control sublayer.
.TP
.B DL_RQST_NORSP
no acknowledgement service to be used in the medium access control sublayer.
.RE
.SH STATE
This message is valid in state
.BR DL_IDLE .
.SH "NEW STATE"
The resulting state is unchanged.
.SH VERSIONS
.PP
This manpage was written for
.B LiS\c
.
.[
LiS
.]
.br
The Data Link Provider Interface first appeared in SVR 4.
.[
svr4
.]
.br
This interface conforms to DLPI Revision 2.
.XX
.[
dlpi
.]
.[
magic
.]
.[
advprog
.]
.[
$LIST$
.]
.T2